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Correlation Analysis of Tropical Rainforest Climate Effect on Radio Signal Strength at KUSZA Observatory, Terengganu

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Climate in Malaysia is tropical with a combination of several characteristic features which are uniform temperature, high humidity, and copious rainfall. Certain combinations of the constituents in weather can cause radio signals to be heard hundreds of miles beyond the ordinary range of radio communications. This study investigates the effect of weather (temperature, wind, solar radiation, humidity, and rain rate) on the strength of radio signal up to 9 GHz detected at KUSZA Observatory (KO), UniSZA, Terengganu. The signal power level and the weather factor for each parameter were collected using spectrum analyzer and weather station respectively in a period of 12 hours on 21st January 2016. Spearman correlation was used to determine the relationship between weather parameter and radio signal attenuation. Results obtained shows that these tropical weather have significant effect on radio signal where the highest correlation value for each factor are 0.70756 for solar radiation, 0.6285 for humidity, 0.4344 for wind speed, 0.3850 for rain rate, and 0.3339 for temperature. This research will benefit active spectrum user such as mobile telecommunication, wireless signal, satellite, TV transmission, and radio astronomers in managing the Radio Frequency Interference (RFI) for radio observation and solar activity monitoring.
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Keywords: Radio Astronomy; Radio Frequency Interference; Radio Signal Strength; Rainforest Climate Effect

Document Type: Research Article

Affiliations: 1: School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia 2: East Coast Environmental Research Institute (ESERI), Universiti Sultan Zainal Abidin, Gong Badak Campus, 21300 Kuala Terengganu, Terengganu, Malaysia 3: School of Informatics and Applied Mathematics, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia 4: Physics Departments, Faculty of Science, Universiti of Malaya, 50603 Kuala Lumpur, Malaysia

Publication date: 01 February 2017

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